I am new to trains and have jumped in the deep end with a 5X11 layout (top of a pool table no longer being used) which consisted of Bachmann EZ track with 4 rectangular tracks with a over/under in the middle so running 5 DC trains at once with 15-17 box car trains on the 4 rectangles and a 10 car CDN grain hoppers in the center with the over/under----after a few frustrating weeks with the over/under and it was pulled. The center grew into a industrial area with a Grain elevator, cement plant, a gravel crushing op, a redi-mix plant with related sidings. and a Locomotive garage for 2 engines. I am getting to the end where there is just no more room so I am looking to expand to a U shape off the end of the main board and doing a double train loop which leads me to my question as I will be using 25' of double track for a total of 100' for 2 complete layouts side by side powered by DC. they will branch off from the original layout and then return to the original layout so I will need to go from Bachmann EZ to Atlas/Kato and then back to Bachmann. I have looked into laying my own track but know nothing about it other than what I see on you-tube. Any suggestions would be greatly appreciated.